Hey yous guys give me your thoughts on a m103 to m104 engine onversion for a 89 300CE. Please don't just put "sel your car and buy another one" because most of us can't just do that.

 

I also have an '89 300CE and I am currently swapping my 3.0L M103 for a 3.2L M104. The M103 needed $5k worth of work and new parts so I bought a pristine M104 for the same price (cars & parts are a lot more expensive in Australia than in most other countries). The new engine is also going to have a turbo kit fitted to it.
One thing to keep in mind is that your old factory computer and harness will need to be changed. You may as well do what I'm doing and buy an aftermarket system (Motec, Autronic etc) to run things. It will also improve the power output.

Should be finished in 3-4 weeks. I'll let you know if it was worth it.

 

hey ortolan, let me know how things work out, im also thinking to do that or put a 2jz transplant. btw im located in Perth

 

Ok So How did the Swap turn out. I too am also think of the exact project. And its been more than 3-4 weeks (haha)

 

DUhaust :Last Activity: 09-18-2007 03:47 PM

kiasu: Last Activity: 10-30-2007 11:42 PM

Wow. This thread is 5 years old

 

Right, so thats more than enough time to finish.
Im starting my m104swap into my 89 300CE tomorrow so Im trying to get as much info as I can.